Vehicle door structure and manufacturing method thereof

Abstract

To improve the sealing performance of a vehicle door structure.SOLUTION: A division bar 50 is provided between a fixed glass 16 and a lifting / lowering glass 14. The division bar 50 is made of resin. A fastening surface 58A that faces a fastened surface 74B of a main frame 72 is formed at an upper end 58 of the division bar 50. Further, an insert nut 62 is embedded in the upper end 58 of the division bar 50 such that an axial end face 62A is exposed from the fastening surface 58A. A sealing component 60 made of a resin softer than the division bar 50 is provided around the upper end 58 of the division bar 50.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] Disclosed herein is a vehicle door structure and a method for manufacturing the same. [Background technology]

[0002] A vehicle door is provided with a retractable glass and a fixed glass as window components. For example, a front door has a fixed glass in a relatively forward portion and a retractable glass in a relatively rear portion.

[0003] A division bar, such as that shown in Patent Document 1, is provided on a vehicle door as a frame bar component that separates the fixed glass and the liftable glass. The division bar extends in a generally vertical direction. A guide groove is formed in the division bar to guide the liftable glass. The division bar also has an insertion groove on the opposite side of the guide groove. The fixed glass is inserted into the insertion groove.

[0004] Furthermore, sealing parts such as weather strips and glass runs are attached to the guide grooves and fitting grooves. For example, notches are formed in the fitting grooves and guide grooves, and lips are formed on the weather strips and glass runs to be inserted into the notches.

[0005] Patent Document 2 discloses a structure for fastening the upper end of a division bar to a window frame of a vehicle door. In this document, the division bar is a molded product made of a metal plate.

[0006] 7, a sealing component 112 is connected to the upper end portion of the division bar 110. The upper end of the sealing component 112 abuts against the window frame 100. The division bar 110 is fastened to the window frame 100 via a bracket 120.

[0007] The bracket 120 includes a leg plate 122 and a seat plate 124. The leg plate 122 extends in the vertical direction along the division bar 110. The seat plate 124 extends in the approximately front-to-rear direction along the window frame 100. The bracket 120 also has a bent portion 126 that connects the upper end of the leg plate 122 and the rear end of the seat plate 124. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 2020-200008 [Patent Document 2] Patent Publication No. 2021-104708 Summary of the Invention [Problem to be solved by the invention]

[0009] However, if the seat plate 124 of the bracket 120 is spaced downward from the window frame 100, when the bracket 120 is bolted to the window frame 100, the bracket 120 and the division bar 110 are pulled up by the axial force.

[0010] However, weatherstrips and glass runs are attached to the division bar 110 in the vertical direction. Contact friction with these sealing parts prevents the division bar 110 from being pulled up. As a result, bending deformation may occur, causing the bent portion 126 of the bracket 120 to open. In such cases, gaps may form between the division bar 110 or sealing parts 112 and the window frame 100, which could cause so-called wind noise to leak into the vehicle cabin.

[0011] Therefore, this specification discloses a vehicle door structure that can improve sealing performance compared to conventional door structures. [Means for solving the problem]

[0012] This specification discloses a vehicle door structure. This vehicle door structure includes a main frame, a fixed glass, a liftable glass, and a division bar. The main frame is located above the window sash of the vehicle door and extends in the fore-and-aft direction of the vehicle. The fixed glass and the liftable glass are arranged in the window sash in the fore-and-aft direction of the vehicle. The division bar is provided between the fixed glass and the liftable glass. The division bar is made of resin. A fastening surface that faces the fastened surface of the main frame is formed at the upper end of the division bar. Furthermore, an insert nut is embedded in the upper end of the division bar so that its axial end face is exposed to the fastening surface. A sealing part made of resin that is softer than the division bar is provided around the upper end of the division bar.

[0013] According to the above configuration, a fastening surface facing the main frame is provided at the upper end of the resin division bar, and an insert nut is embedded in the fastening surface. In this manner, in the vehicle door structure according to this embodiment, the division bar and the main frame can be fastened together without a bent portion, in other words, by butting together linear parts.

[0014] This specification also discloses a method for manufacturing the above-described vehicle door structure, in which the division bar and the seal component are molded by two-color molding.

[0015] By molding the division bar and seal parts using two-shot molding, the number of parts can be reduced compared to assembling separate parts.

[0016] In the vehicle door structure described above, the sealing component may be a sponge material attached to the upper end of the division bar at the end in the front-rear direction of the vehicle.

[0017] According to the above configuration, for example, by using a caulking sponge that is used as a sealing component in other locations of a vehicle door structure as a sealing component, manufacturing costs can be reduced by standardizing the components.

[0018] In the vehicle door structure described above, the seal component may be ring-shaped and surround the fastening surface of the division bar. The seal component may be detachable from the division bar. The fastening surface of the division bar is formed with a claw that faces outward relative to the axial center of the division bar. The claw and the fastening surface form an engagement groove that opens outward relative to the axial center of the division bar. An insertion hole into which the claw is inserted is drilled in the seal component. Furthermore, an internal protrusion that protrudes toward the axial center of the division bar and engages with the engagement groove is formed on the inner wall of the insertion hole. The side surface of the engagement groove is formed with an upward slope so that it extends upward as it moves away from the axial center of the division bar. The internal protrusion is formed with a downward slope so that it extends downward as it moves toward the axial center of the division bar.

[0019] With this configuration, when the division bar is fastened to the main frame with the bolts, the seal component is pulled toward the axial center of the division bar based on the upwardly inclined shape of the engagement groove and the downwardly inclined shape of the inner protrusion that engages with the engagement groove. This makes it possible to prevent the seal component from protruding from the division bar during the fastening operation. [Effects of the Invention]

[0020] According to the vehicle door structure disclosed in this specification, sealing performance can be improved compared to conventional methods. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a side view illustrating a right front door as a vehicle door structure according to an embodiment of the present invention. [Figure 2] 1 is an exploded perspective view illustrating an example of the structure around the upper end of a division bar in a vehicle door structure according to an embodiment of the present invention. FIG. [Figure 3] FIG. 3 is an exploded perspective view illustrating the structure around the upper end of the division bar, taken at a different angle from that of FIG. 2. [Figure 4]FIG. 10 is a perspective view illustrating a division bar according to a first modified example of the present embodiment. [Figure 5] FIG. 10 is a perspective view illustrating a division bar according to a second modification of the present embodiment. [Figure 6] 6 is a diagram illustrating a cross section taken along line AA in FIG. 5 when a sealing part is attached to a division bar. [Figure 7] FIG. 10 is a cross-sectional view illustrating the structure around the upper end of a conventional division bar. DETAILED DESCRIPTION OF THE INVENTION

[0022] A vehicle door structure according to an embodiment will be described below with reference to the drawings. The shapes, materials, quantities, and values ​​described below are examples for the purpose of explanation and can be changed as appropriate depending on the specifications of the vehicle door structure. In addition, the same reference numerals will be used to designate equivalent elements in all drawings.

[0023] In addition, in Figures 1 to 7, a Cartesian coordinate system consisting of the FR axis, RH axis, and UP axis is used to represent the position and direction of each component. The FR axis is the longitudinal axis of the vehicle, with the front of the vehicle being the positive direction. The RH axis is the transverse axis of the vehicle, with the right side of the vehicle being the positive direction. The UP axis is the vertical axis of the vehicle, with the upward direction being the positive direction.

[0024] 1 illustrates a right front door of a vehicle as an example of the vehicle door structure. However, the vehicle door structure according to this embodiment can be applied to any door that includes three components: a fixed glass, a retractable glass, and a division bar that separates the two glass panes.

[0025] 1 and 2, the vehicle door structure according to this embodiment includes a main frame 72 of a window sash 70, a fixed glass 16, a liftable glass 14, a division bar 50, and a seal component 60. The detailed structures of these components will be described below.

[0026] <Outline of vehicle door structure> 1, a vehicle door 10 includes a door main body 12 and a window sash 70. For example, the window sash 70 is formed by roll-forming a metal plate such as iron or aluminum. The window sash 70 is joined to a door inner panel (not shown), which is part of the door main body 12, by welding or the like.

[0027] The vehicle door illustrated in Fig. 1 is a so-called sash door in which the door body 12 and the window sash 70 are separate bodies. However, the vehicle door structure according to this embodiment is not limited to sash doors. In short, the vehicle door structure according to this embodiment is applicable to any vehicle door that includes a sash having a main frame 72 to which the upper end 58 of the division bar 50 is fastened. For example, the vehicle door structure according to this embodiment is also applicable to a panel door in which the door body and the window sash are integrally molded.

[0028] As shown in Figure 1, a fixed glass 16 and a retractable glass 14 are arranged in the front-to-rear direction of the vehicle within the window opening of the door 10, in other words, within the window sash 70. As shown in Figure 1, in the front door of the vehicle, the fixed glass 16 is disposed relatively forward, and the retractable glass 14 is disposed relatively rearward. In contrast, in the rear door of the vehicle, the fixed glass 16 is disposed relatively rearward, and the retractable glass 14 is disposed relatively forward. The retractable glass 14 can be raised and lowered by a power window regulator (not shown).

[0029] A division bar 50 is provided between the fixed glass 16 and the retractable glass 14. The division bar 50 also functions as a guide component for the retractable glass 14, and is therefore extended below the window opening of the door 10. The detailed structure of the division bar 50 will be described later.

[0030] The door 10 is provided with a number of sealing components around the window. For example, a weather strip 40 for the fixed glass is provided so as to surround the fixed glass 16. Furthermore, a glass run 20 is provided on the division bar 50 and the window sash 70. The glass run 20 is made of a soft resin material such as rubber.

[0031] For example, the glass run 20 includes a glass run front 21, a glass run rear 23, and a glass run upper 25, and is formed in a gate shape in side view. The glass run front 21 extends vertically along the division bar 50. The glass run rear 23 extends vertically along the rear vertical frame of the window sash 70. The glass run upper 25 is connected to the upper ends of the glass run front 21 and the glass run rear 23. Furthermore, the glass run upper 25 extends in the front-rear direction along the main frame 72 of the window sash 70 (see FIG. 3).

[0032] Furthermore, a portion of the surface of the window sash 70 exposed to the exterior of the vehicle may be covered with a window molding 18. For example, the window molding 18 is made of a metal such as stainless steel or a composite material of metal and resin. By providing the window molding 18 around the window frame of a vehicle door, a design effect of making the window frame appear thinner can be obtained. Similarly, a portion of the surface of the window sash 70 exposed to the interior of the vehicle may be covered with a frame garnish (not shown), which is an interior part.

[0033] <Structure of the upper part of the division bar> Fig. 2 illustrates an example of the structure around the upper portion of the division bar 50 in the vehicle door structure according to this embodiment. For example, Fig. 2 illustrates the vehicle door structure as viewed from inside the vehicle cabin with the left side of the page facing the front of the vehicle. Fig. 3 also illustrates the vehicle door structure of the right front door in Fig. 1 as viewed from outside the vehicle with the right side of the page facing the front of the vehicle.

[0034] 1, the division bar 50 extends linearly in a generally vertical direction, but strictly speaking, it is tilted backward so as to be inclined toward the rear of the vehicle with respect to the vertical axis (UP axis). Therefore, in FIGS. 2 to 6, the extension direction of the division bar 50 is set vertically, and the vertical axis (UP axis) is tilted with respect to the vertical direction of the page. Similarly, the front-rear axis (FR axis) of the vehicle is also tilted with respect to the horizontal direction of the page.

[0035] The division bar 50 is made of resin. For example, the division bar 50 is made of a resin material such as polypropylene. As illustrated in FIG. 1, the fixed glass 16 is provided in front of the division bar 50, and the liftable glass 14 is provided behind it. As illustrated in FIG. 3, an insertion groove 46 into which the fixed glass 16 is inserted is formed in the front portion of the division bar 50. Furthermore, as illustrated in FIG. 2, a guide groove 44 that guides the liftable glass 14 is formed in the rear portion of the division bar 50.

[0036] More specifically, the division bar 50 includes a prismatic main body 52, an outer plate 54 provided on the outer side of the main body 52 in the vehicle width direction, and an inner plate 56 provided on the inner side of the main body 52 in the vehicle width direction.

[0037] The outer plate 54 protrudes further in the longitudinal direction of the vehicle than the main body 52. ​​Similarly, the inner plate 56 protrudes further in the longitudinal direction than the main body 52. ​​Therefore, in the front portion of the division bar 50, a fitting groove 46 having a gate-shaped cross section is formed by the front surface 52A of the main body 52, the outer plate 54, and the inner plate 56. The weatherstrip 40 for the fixed glass 16 is fitted into this fitting groove 46.

[0038] The weatherstrip 40 has a fitting groove 42 that opens toward the front of the vehicle. The edge of the fixed glass 16 is fitted into this fitting groove 42. The weatherstrip 40 is made of a soft resin material such as rubber.

[0039] 2, an auxiliary plate 56C extends in the front-to-rear direction of the vehicle from an upper end surface 56B of the inner plate 56 and from the rear surface 52B of the main body 52. ​​The distance (groove width) between the auxiliary plate 56C and the outer plate 54 is set to be the same as the distance between the inner plate 56 and the outer plate 54.

[0040] A guide groove 44 having a gate-shaped cross section is formed by the rear surface 52B of the main body 52, the outer plate 54, the inner plate 56, and the auxiliary plate 56C in the rear portion of the division bar 50. The glass runfront 21 is fitted into this guide groove 44.

[0041] The glass run-front 21 includes a guide groove 22 with a gate-shaped cross section and a pair of seal lips 24, 24 extending into the guide groove 22 from the side wall end of the guide groove 22. The front edge of the lift-up glass 14 is inserted into the guide groove 22. The front edge of the lift-up glass 14 slides against the seal lips 24, 24 when the lift-up glass 14 is raised or lowered.

[0042] The outer surface of the outer plate 54 in the vehicle width direction is an outer exposed surface 54A that is exposed to the outside of the vehicle. The upper end surface 54B of the outer plate 54 functions as a so-called alignment surface that comes into contact with, for example, the main frame 72 of the window sash 70 or the bottom surface of the window molding 18 (see FIG. 1).

[0043] The inner surface of the inner plate 56 in the vehicle width direction is an inner exposed surface 56A that is exposed to the vehicle interior. An upper end surface 56B of the inner plate 56 functions as an alignment surface with, for example, the main frame 72 of the window sash 70 or a frame garnish (not shown).

[0044] <Fastening structure between division bar and main frame> 1 to 3, a main frame 72 is provided on the upper portion of the window sash 70. Note that Fig. 2 and Fig. 3 show a portion of the window sash 70. More specifically, the portion of the window sash 70 related to fastening to the vehicle door structure according to this embodiment is shown.

[0045] The main frame 72 extends in the front-rear direction of the vehicle. More specifically, the main frame 72 extends in a downward inclined manner so as to slope downward as it approaches the front of the vehicle.

[0046] 2 and 3 show an example of a partial cross-sectional shape of the main frame 72. For example, the main frame 72 includes a flat plate 74 that is arranged substantially horizontally and a vertical plate 75 that is arranged substantially vertically. Fastening holes 74A are drilled in the flat plate 74 along its thickness. The lower surface of the flat plate 74 serves as a fastening surface 74B. The fastening surface 74B faces the fastening surface 58A of the division bar 50.

[0047] A bolt (not shown) is inserted into the fastening hole 74A. This bolt is screwed into the insert nut 62. The bolt is, for example, a flat head screw. The fastening hole 74A is countersunk so that it can accommodate the head of the bolt. In other words, the fastening hole 74A is formed with a cone-shaped cross section, with the hole diameter decreasing as it approaches the fastened surface 74B.

[0048] 2 and 3, the upper end 58 of the division bar 50 is an expanding portion whose diameter increases as it goes upward relative to the main body portion 52. To ensure sufficient sealing performance, the upper end 58 expands in diameter in a curved shape when viewed from the side. Furthermore, for example, the ridge of the upper end 58 and the ridge of the sealing component 60 are connected continuously without any steps.

[0049] A fastening surface 58A is formed on the end surface of the upper end portion 58. The fastening surface 58A faces a fastened surface 74B provided on the main frame 72 of the window sash .

[0050] During assembly of the vehicle door structure, the angle of fastening surface 58A is determined so that fastening surface 58A and fastened surface 74B are parallel. For example, referring to Fig. 1, the angle of fastening surface 58A relative to main body 52 of division bar 50 is determined according to angle θ1 formed between the upper end of division bar 50 and window sash 70 (main frame 72). For example, referring to Fig. 2, the angle of fastening surface 58A is determined so that it is inclined relative to central axis C1 of main body 52, which extends linearly.

[0051] An insert nut 62 is embedded in the upper end 58 of the division bar 50. For example, the insert nut 62 is embedded in the upper end 58 by insert molding or press fitting. The insert nut 62 is embedded in the upper end 58 so that an axial end face 62A is exposed on the fastening surface 58A. Note that in Figures 2 to 6, the thread groove formed on the inner peripheral surface of the insert nut 62 is not shown.

[0052] The screw-in axis C2 of the insert nut 62 is embedded in the upper end portion 58 so as to be perpendicular to the fastening surface 58A. As described above, the fastening surface 58A is inclined with respect to the central axis C1 of the main body portion 52, and therefore the screw-in axis C2, which is perpendicular to the fastening surface 58A, is also inclined with respect to the central axis C1.

[0053] The insert nut 62 is embedded in the center of the fastening surface 58A in the vehicle width direction and the front-rear direction, for example. The axial end face 62A of the insert nut 62 is embedded in the upper end portion 58 so as to protrude slightly along the screw-in axis C2 relative to the fastening surface 58A.

[0054] By making the axial end face 62A protrude from the fastening face 58A, it is possible to bring the insert nut 62 into contact with the main frame 72, a so-called metal touch. For example, when the division bar 50, which is a plastic part, and the main frame 72, which is a metal part, are fastened together, the axial force of the bolt fastening may decrease due to deterioration of the division bar 50. This would result in a decrease in the sealing performance between the division bar 50 and the main frame 72.

[0055] Therefore, in the vehicle door structure according to this embodiment, the axial end face 62A is protruded from the fastening face 58A, thereby enabling a reliable metal-to-metal contact between the insert nut 62 and the main frame 72. This maintains the axial force of the bolt fastening.

[0056] 6, for example, the insert nut 62 is embedded in the upper end portion 58 so that at least a portion of the insert nut 62 is included within the diameter L1 of the main body portion 52. If the insert nut 62 is provided at a position separated from the main body portion 52 in the vehicle longitudinal direction or the vehicle width direction, the path from the main body portion 52 to the insert nut 62 may have an L-shaped structure with a bent portion. In contrast, by arranging the insert nut 62 so that at least a portion of the insert nut 62 is included within the diameter L1 of the main body portion 52 as shown in FIG. 6, the formation of a bent portion on the path from the main body portion 52 to the insert nut 62 is avoided.

[0057] 2 and 3, a sealing component 60 is provided around the upper end portion 58. For example, the sealing component 60 is formed to have a ring shape (rectangular ring shape) surrounding the fastening surface 58A. The sealing component 60 is made of a resin softer than the division bar 50, such as an olefin-based thermoplastic elastomer. The upper surface of the sealing component 60 is a sealing surface 60A that abuts against the fastening surface 74B of the main frame 72. For example, the sealing surface 60A is formed to protrude beyond the fastening surface 58A. The sealing surface 60A may be flush with the axial end surface 62A of the insert nut 62. Alternatively, the sealing surface 60A may protrude beyond the axial end surface 62A of the insert nut 62. By having the sealing surface 60A protrude beyond the axial end surface 62A, the sealing component 60 can reliably seal the fastening surface 74B even if manufacturing variations occur.

[0058] For example, the sealing part 60 is molded together with the division bar 50 by two-shot molding. Since two-shot molding is a known technology, a detailed description will be omitted here. For example, the sealing part 60 is molded around the upper end 58 of the molded division bar 50 while it is held in a mold. By molding the division bar 50 and the sealing part 60 by two-shot molding, the contact portions of the two can be welded together during molding, which reduces the number of parts compared to when the parts are made up of detachable parts. In addition, compared to when the parts are made up of detachable parts, gaps caused by misalignment or variations that occur when the parts are assembled are reduced.

[0059] When fastening the division bar 50 to the main frame 72, first the fastening surface 58A of the division bar 50 faces the fastened surface 74B of the main frame 72. Then the fastening hole 74A of the flat plate 74 and the insert nut 62 are aligned, and a bolt (not shown) is screwed into both.

[0060] During this screwing process, an axial force is generated in the insert nut 62, which pulls up the division bar 50. As described above, the insert nut 62 is provided on an extension of the main body 52 and does not have a bending structure, so the main body 52 is pulled up in a straight line.

[0061] During this pulling process, the seal component 60 comes into contact with the fastening surface 74B and is crushed, thereby achieving a sealing effect. Also, as described above, because the axial end surface 62A of the insert nut 62 protrudes beyond the fastening surface 58A, the axial end surface 62A and the fastening surface 74B of the main frame 72 are reliably brought into contact with each other.

[0062] <First Alternative Example of Vehicle Door Structure> Figure 4 illustrates a first alternative example of the vehicle door structure according to the present embodiment. In this alternative example, the configuration other than the upper end portion 58 of the division bar 50 and the sealing components 61, 63, and 160 is the same as that in Figures 2 and 3, and therefore is omitted from the illustration as appropriate.

[0063] In this example, sealing components 61, 63 are provided around the upper end portion 58, more specifically, at both ends in the vehicle's longitudinal direction. Furthermore, sealing component 160 is provided on the outer side of upper end portion 58 in the vehicle width direction. Sealing components 61, 63, 160 are made of, for example, caulking sponge. For example, this sponge material is used as soundproofing material inside the front door. By using materials already used in other parts of the front door for sealing components 61, 63, 160, costs can be reduced by standardizing materials. Furthermore, two-color molding can be omitted, thereby reducing costs through this molding.

[0064] The sealing parts 61, 63, 160 are in a sheet shape, and an adhesive may be applied to the contact surfaces 61A, 63A, 160A that come into contact with the upper end part 58. Furthermore, the upper end part 58 may have positioning recesses 59, 59 formed at its front-rear end parts.

[0065] <Second Alternative Example of Vehicle Door Structure> 5 and 6 show a second modified example of the vehicle door structure according to the present embodiment. In this modified example, the configuration other than the upper end portion 58 of the division bar 50 and the sealing component 60 is the same as that shown in FIGS. 2 and 3, and therefore will not be shown in the drawings as appropriate.

[0066] In this example, the sealing component 60 is detachable from the division bar 50. The sealing component 60 has, for example, a rectangular ring shape that surrounds the fastening surface 58A of the division bar 50. The sealing component 60 is made of a resin that is softer than the division bar 50, such as an olefin-based thermoplastic elastomer.

[0067] Generally, when two-color molding is performed using different materials, the adhesion between the two parts may be lower than when two-color molding is performed using the same material. Therefore, strict control of molding conditions is required. Furthermore, such strict control makes the molding process more complicated. In this embodiment, by making the division bar 50 and the seal component 60 separate, detachable components and providing an engagement mechanism, as described below, it is possible to ensure adhesion without incurring the cost of two-color molding.

[0068] An opening 68 is formed in the center of the seal part 60, corresponding to the insert nut 62. From this point on, the seal part 60 has a ring shape (rectangular ring shape) surrounding the fastening surface 58A. The opening 68 is formed to have, for example, a polygonal shape.

[0069] 5, a guide protrusion 58A1 is provided on the upper end portion 58 of the division bar 50 in correspondence with the opening 68 of the seal part 60. The guide protrusion 58A1 has the same shape as the opening 68.

[0070] A seal frame 69 is formed on the upper surface of the seal component 60 so as to surround the edge of the seal component 60. The seal frame 69 is, for example, a rectangular frame that protrudes from the upper surface of the seal component 60. For example, referring to FIG. 6, the seal frame 69 is formed so that the height of the upper surface of the seal frame 69 is equal to the height of the axial end surface 62A of the insert nut 62 when the seal component 60 is attached to the division bar 50. Alternatively, the upper surface of the seal frame 69 may protrude beyond the axial end surface 62A. By making the upper surface of the seal frame 69 protrude beyond the axial end surface 62A, the seal frame 69 can reliably seal the fastened surface 74B of the main frame 72, even if manufacturing variations occur.

[0071] Furthermore, protrusions 64, 65 are formed on both longitudinal ends of the seal frame 69. The protrusions 64, 65 are formed so as to protrude further than the seal frame 69. The seal between the main frame 72 and the division bar 50 is ensured by the protrusions 64, 65 in addition to the seal frame 69.

[0072] Furthermore, engagement mechanisms are provided on both the seal part 60 and the upper end part 58 of the division bar 50. That is, insertion holes 66, 67 are drilled in the seal part 60 in front of and behind the opening 68. Claws 55, 57 protrude from the fastening surface 58A of the division bar 50. The claws 55, 57 are oriented outward relative to the central axis C1 of the division bar 50. These claws 55, 57 are inserted into the insertion holes 66, 67.

[0073] The insertion holes 66, 67 have a hole shape that follows the shape of the tabs 55, 57. For example, as illustrated in the enlarged views of Figures 5 and 6, the inner walls of the insertion holes 66, 67 are formed with internal protrusions 66A, 67A that protrude toward the central axis C1 of the division bar 50. Meanwhile, engagement grooves 55A, 57A are formed in the division bar 50 by the tabs 55, 57 and the fastening surface 58A. The engagement grooves 55A, 57A are formed to have a U-shaped cross section that opens outward relative to the central axis C1 of the division bar.

[0074] More specifically, the fastening surface 58A has inclined surfaces 51, 53 formed at both longitudinal ends farther away from the central axis C1 and the screw-in axis C2 than the pawls 55, 57. These inclined surfaces 51, 53 and the opposing lower surfaces of the pawls 55, 57 form a pair of opposing side surfaces of the engagement grooves 55A, 57A. The inclined surfaces 51, 53 and the lower surfaces of the pawls 55, 57 extend upward as they become farther away from the central axis C1 and the screw-in axis C2. As a result, the pair of side surfaces of the engagement grooves 55A, 57A are formed in an ascending inclination such that they extend upward as they become farther away from the central axis C1 and the screw-in axis C2 of the division bar 50.

[0075] On the other hand, the inner protrusions 66A, 67A are formed with a downward inclination so that they extend downward toward the center axis C1 and the screw-in axis C2 of the division bar 50. In this structure, when the division bar 50 is fastened to the main frame 72 with a bolt, the inner protrusions 66A, 67A are pulled toward the center axis C1 of the division bar 50 and the screw-in axis C2 of the insert nut 62 by the axial force. This makes it possible to prevent the seal component 60 from protruding from the division bar 50 during fastening.

[0076] 2, the axial end face 62A of the insert nut 62 is positioned to protrude beyond the fastening surface 58A. More specifically, the embedded amount of the insert nut 62 is determined so that the axial end face 62A protrudes beyond the guide protrusion 58A1 and the pawls 55, 57, as exemplified by the distance D1 in FIG.

[0077] This positioning ensures that the insert nut 62 and the main frame 72 (see FIG. 2) come into contact with each other, i.e., metal contact, and as a result, the sealing performance between the division bar 50 and the main frame 72 is maintained.

[0078] As described above, the axial end face 62A of the insert nut 62 is flush with the seal frame 69 of the seal component 60. Alternatively, the seal frame 69 protrudes slightly from the axial end face 62A. With this structure, only the insert nut 62 and the seal component 60 come into contact with the main frame 72, and contact with the division bar 50, which is a resin component, is avoided. [Explanation of symbols]

[0079] 10 door, 12 door body, 14 lifting glass, 16 fixed glass, 20 glass run, 21 glass run front, 40 weather strip for fixed glass, 44 guide groove, 46 fitting groove, 50 division bar, 52 body, 51, 53 inclined surface, 55, 57 claw, 55A, 57A engagement groove, 58A fastening surface, 58A1 guide protrusion, 59 recess, 60, 61, 63 sealing part, 62 insert nut, 62A axial end face, 64, 65 convex portion, 66, 67 insertion hole, 66A, 67A inner protrusion, 68 opening, 69 seal frame, 70 window sash, 72 main frame, 74A fastening hole, 74B fastening surface.

Claims

[Claim 1] a main frame provided above a window sash of a vehicle door and extending in a front-rear direction of the vehicle; a fixed glass and a retractable glass arranged in the front-rear direction of the vehicle within the window sash; a division bar provided between the fixed glass and the liftable glass; A vehicle door structure comprising: The division bar is made of resin, A fastening surface facing the fastening surface of the main frame is formed on the upper end of the division bar, Furthermore, an insert nut is embedded in the upper end of the division bar so that the axial end surface is exposed to the fastening surface, A sealing part made of a resin softer than the division bar is provided around the upper end of the division bar, The sealing part has a ring shape that surrounds the fastening surface of the division bar and is detachable from the division bar, The fastening surface of the division bar is formed with a claw directed outward with respect to the axial center of the division bar, The claw and the fastening surface form an engagement groove that opens outward relative to the axial center of the division bar, The sealing part has an insertion hole into which the claw is inserted, and an inner protrusion is formed on the inner wall of the insertion hole, protruding toward the axial center of the division bar and engaging with the engagement groove, The side surface of the engagement groove is formed in an ascending inclined shape so as to extend upward as it moves away from the axial center of the division bar, The inner protrusion is formed in a downward inclined shape so as to extend downward toward the axial center of the division bar. Vehicle door structure.

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